|IDL Reference Guide: Functional List of IDL Routines|
.CONTINUE - Continues execution of a stopped program.
.SKIP - Skips over the next n statements and then single steps.
.STEP - Executes one or n statements from the current position.
.STEPOVER - Executes a single statement if the statement doesn't call a routine.
.TRACE - Similar to .CONTINUE, but displays each line of code before execution.
BREAKPOINT - Sets and clears breakpoints for debugging.
SHMDEBUG - Print debugging information when a variable loses reference to an underlying shared memory segment.
STOP - Stops the execution of a running program or batch file.
IDL Online Help (March 06, 2007)